[PATCH] D142179: [ADT] Add bit_floor, bit_ceil, and bit_width to bit.h

Fri Jan 20 05:35:58 PST 2023

RKSimon added a comment.

In D142179#4068454 <https://reviews.llvm.org/D142179#4068454>, @barannikov88 wrote:

> All these functions are `constexpr` in C++20. Should we do the same?

It'd be nice, but IIRC there were a few problems on some compilers when we tried to do this for some of the previous additions (plus for instance bit_cast uses memcpy).

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  https://reviews.llvm.org/D142179/new/

https://reviews.llvm.org/D142179